Boiler.



0. E. CHAPMAN.

BOILER.

APPLICATION FILED 00m. 2a, 1907.

SHEET 1.

INVENTOR Mqpman M 60 Patented Aug. 31

3 SHEETS WITNESSES marker ATTORNEYS 0. B. CHAPMAN.

BOILER.

APPLICATION FILED OCT. 23, 1907.

Patented Aug. 31

3 SHBETSSHBET 2.

BLO w OFF FROM F550 warn; #541 1? /NVENTO/ CfiafZarZi (226919272 (12% By M 7&

. ATTORNEYS Q WITNESSES Patented Aug. 31, 1909.

. S SHBETSSHEET 3.-

BOILER. APPLICATION FILED 00123, 1907.

O. E. CHAPMAN.

INVENTOH (iiarlwfifla vmm 16 @Y a ATTORNEYS WITNESSES UNITED STATES PATENT OFFICE.

GHABLES EDWARD CHAPIAN, OF FORT EDWARD, NEW YORK, ASSIGNOB 0F ONE-HALF '10 JOSEPH GOODFELLOW, 0F FORT EDWARD, NEW YORK.

BOILER.

To all wnomet may concern:

Be it known that I, CHAnLns EDWARD CHAPMAN, a citizen of the United States,

- boiler proper, and wherein 'the amount of water conducted to the boiler from-the water column by excess air pressure in the water column over and above the boiler pressure, is under complete control.

Another purpose of the invention is to provide a series of coils within the body of the boiler, each coilbeing independent of the other, each receiving water in a highly heat edcondition from a' header connected with the water column andach of said coils being also connected with a steam header connected in its turn with the said steam dome.

It is also a purpose of the invention to provide means for straining the water as it enters the header supplying the coils, and to further strain or filter and practically atomize the water as it leaves said header in its passage to the coils.

The invention consistsin the novel construction and combination of the several parts as will be hereinafter fully set forth and pointed out in the claims.

Reference is to be had to the accompanying drawings formin a part of this specification, in which simi ar characters of reference indicate corresponding parts in all the figures. v

Figure 1 isia sectional frontielevation of the boiler and a vertical section through the water column and steam dome, the connection between the boiler, the water column and steam dome, being in front elevation Fig. 21 is a sectional side elevation of the complete boiler; Fig. 3 is a sectional plan view of the boiler; Fig. 4 is a horizontal section through the body of the boiler and water column on the line 4-4; of Fig. l, the steam dome being omitted; and Fig. 5 isan enlarged sectionthrou'gh the water header and a portion of a connection for a coil leading therefrom, illustrating the manner in which the water is filtered and practically Specification 015 Letters Patent.

A lication ,flled October 23, 1907. Serial No. 39am.

Patented Au 31, 1909.

atomized, before entering the said connection.

A represents the casing of the boiler which may have any cross sectional shape; in the drawings it is shown rectangular, and A represents the smoke stack leading therefrom, A. represents the grate, which may be of any approved type, and A represents the masonry supporting said grate and the casing.

B represents a series of vertical coils arranged within the casing over the grate. These coils are provided with the customary bends 10, and each coil is provided with a forward leg 11 that extends downward at the front of the fire box and is provided at the rear with two legs 12 and 13, that extend down at the-rear of the fire box and are connected by a return bendd. Each coil B is provided at its upper end with a pipe 15 that extends out through the casing, and each forward leg of each coil is provided also with an outwardly extending pipe 16.

v G represents the water column employed, which may be of any suitable diameter or of any desired height, and this water column is removed from the body of the boiler and is substantially independent thereof. The water is supplied ina highly heated state to the bottoinportion of the water column G, through the medium of a pipe 17 connected with a feed water heater, the said pipe being provided with a regulating valve 18. The water column 0 is also provided with the customary gage l9 and the water is usually forced into the said column C until it reaches about centrally bet-ween its ends, whereby the upperportion is converted into a chamber 20 containing air under great compression, in excess of the boiler pressure, thus insuring the steady flow of water from the column G into and through the coils B. The water column C is provided with a suit-able recording gage 21 at its upper portion indicating the air pressure, and atits lower portion the'water column C is provided with of the watercol-umn'C, and a pipe 22 provided with a valve 23 extends from the water column 0, between the upper portion of the column of water therein and the lower 1 a manhole closed by a plug 22 whereby to facilitate the'cleaning of the said column.

. thus the water is strained before it passes each pipe 25 is connected at its lower end I nozzles extend within the said header D, as

r over the header D to the coils B is delivered -'in the form of a spray, or is practically -face, and these pipes25 correspond in numin the header D above each nozzle, and each portion of said column, and the pipe 22 isl connected with one end of thesaid header D, as is shown best in Fig. 4. As the water enters the header D it passes through a screen 24 located adjacent to the end where the water enters, as is indicated in Fig. 2;

into the body portion ofsaid header. The said header D is provided with a series of pipes 25 that extend down from its under her to the number of coils Bemployed, and

with a fitting 26,preferablya cross fitting, and each cross fitting at its forwardly extending member is provided with a removable plug 27, and the bottom member of each fitting 26 is connected with a blow-ofi' header D, that is smaller than the' water header D, and is located beneath the latter. This blow-ofi header or drum D, is connected with a suitable pipe 28 provided with a valve 29, which pipe 28 may be led wherever desired; thus it will be observed that by removing the plugs 27, each individual vcoil may be blown off when necessary.

W'here each pipe 25 enters the water header D, a nozzle 28" is located, and these is illustrated in Fig. 5, and'each nozzle is provided with a bore 29 of exceedingly: small diameter, so that the water in passmg atomized, and also each nozzle 28 is provided with a'covering or a jacket of a wire mesh 30 so that the water is further filtered or strained before it reaches the bores 29 in the said nozzles. Thus it will be observed that as the water is supplied to the water column C in a highly heated condition, and is delivered to the coils in the form of a spray, as sopn as the water reaches the said coils steam is immediately generated, afford-f ing a rapid and a reliable steamer.

In order that the various nozzles 28 may be readily cleaned, an aperture 31 is made of said apertures is closed by a plu 32.

Adjacent to the upper portion of 516 boiler proper, a steam header-E'is provided, shown best in Fig. 3, and each outwardly extending pipe 15at the upper portion of each coil B 15 connected by a pipe 33, or its equivalent, with the aforesaid steam header E, so that each individual coil has an independent connection with the water header D, and said steam header The steam header E, preferabl at one end, is connected by any suitable iorm of pipe 34, or its equivalent, with the upper portion of a steam dome C. This steam dome G is also independent of the" boiler proper, and stands practically alone, and in the preferred arrangement of.

the water column C and steam dome G, they are arran ed at opposite sides of the bod of the boiler, y

as is indicated in Fig. 2. The

steam dome C is provided at its upper portion with the customary gage 35, and steam.

is supplied from the said dome- C to the engine through the medium of a valved pipe 36. A manhole is providedfor the lower portion of the steam dome C, closed by a plug 37 of any approved type, and the lower ortion of the steam dome G is connected y a valved pipe 38 provided with the customary trap 39. s I v I I It will be observed from the foregoing description that the boiler is of exceedingly simple type, that each coil employed is independent in its action throughout, and that all parts of the boiler may be readily reached for re )fllIS, and as stated it is evident that the boiler is an exceptionally rapid steamer.

' The fire box is provided withany approved form of door 40.

' Having thus described my invention, I

claim as new and desire to secure by Letters Patent r 1. In atubular' boiler composed of a plurality of coils, a water column removed from the body of the boiler, a water drum between the water column and the boiler, a connection leading from the bottom of the column to the drum, connections leading from the drum to the coils of the boiler, the water column havin a closedtop, and an opening at its bottom or feed water, whereby when the feed water is admitted the air in the column will be compressed at the top thereof to assist in forcing the. feed water into the boiler, and an atomizer in eachof the connections between the drum and the coils.

2. In a tubular boiler composed of aplui I from the bottom of the column and having a closed top and an opening for feed water near its bottom, whereby when the feed water is admitted to the water column the air in the upper part thereof will be compressed to assist in feeding the feed water to the boiler. v 1

3. In a tubular boiler composed of a pluralit' of coils, a water column removed from the 0d of the boiler, a water drum be tween te column and the boiler and communicating with each of the coils thereof, a connection between the bottom ofthe column and the drum, said column having a closed top and an openingat its bottom for-feed water, whereby when the feed water is admitted the air in the column will be compressed in the top thereof to assist in forcing the feed Water into the boiler.

4. In a tubular boiler, the combination with the body of the boiler and a plurality of independent coils therein, of a water column and a steam dome removed from the body of the boiler, an independent connection between each of the coils, and the steam dome, a water header, a connection between the water header and the water column, means for supplying heated water under air pressurein excess of the boiler pressure to said water column, an independent connection between the water header and each of the coils, and an atomizing device incorp0- 15 rated in the said water connection.

In testimony whereof 'I have signed my name to this specification in the presence of two subscribing Witnesses.

CHARLES EDWARD CHAPMAN. 

